Securities and Exchange Commission Historical Society

Explore our exhibits and delve into our archives of papers, conversations, photos, oral histories and more.

2026 “Ike” Hunt Hall of Honor recipients celebrated.

Learn more

Featured Exhibition
The SEC Experience of the September 11 Attacks

The SEC Experience of the September 11 Attacks

FINRA donates primary sources on the creation of NASD

Digital Archives

This month in 1966...

This month in 1966, NYSE Rule 394(b) was approved. The result of negotiations between SEC Chairman Manuel Cohen and NYSE President Keith Funston, the rule allowed NYSE members to trade off the exchange in certain cases—the NYSE ensured that 394(b) was seldom invoked.

live version